Wrench attachment



(No Model.) Q

W. A. KELLY 8v 0. H. HUBBELL.

' WRENCH ATTACHMENT. No. 347,179. Patented Aug. 10,1886.

INVBNTOR I Mama/M N. PETERS. PhoIw-L'nhognphor. wman m. ac.

UNITED STATES PATENT OFFrca EAST TAWAS, MICHIGAN.

WRENCH ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 347,179, dated August10.18867.

Application filed November 23, 1885. Serial No. 183,632. (No model.)

To all 1071 0172, it may concern.-

Beit known that WG,-\VILLIAM ALEXANDER KELLY and CHARLES HENDERSONHUBBELL, of East 'Iawas, in the county of Iosco and State of Michigan,have invented a new and useful Improvement in Wrench Attachments, whichimprovement is fully set forth in the following specification andaccompanying drawings, in which Figure 1 represents an angularperspective view of a monkey-wrench with our improved attachment. Fig. 2is a view of the fixed jaw and part of the shank of the wrench, togetherwith the tapered block. Fig. 3 is an angular view of the spring,.andFig. 4: is a perspective View of the block.

The invention consists of a wedgeshaped steel block attached to themovable jaw of an ordinary monkey-wrench by means of a peculiarly-shapedspring and two forks, as shall be hereinafter described.

In the drawings, A is the usual longitudinal body,-having on its outerend the fixed head G.

G and D represent the jaws of an ordinary monkey-wrench.

Attached tothe movable jaw D is the wed geshaped'block B, the form ofwhich is plainly shown in Fig. 2, having a serrated front edge andhaving a bifurcated end at H. One prong of the bifurcation passes oneach side of the shank of the wrench at I. This prevents lateralmovement.

These forks hug closely the rounded part of the movable jaw I) at L.This jaw is moved back and forth by the screw N, operated by its milledhead. This attachment Bis provided 7 with teeth upon the inclined faceor front side,

as shown, and is intended as an attachment to wrenches for the purposeof turning pipes or round bars of any material.

. The object to be turned is placed between the jaws, as shown in Fig.1, and the wrench in this instance operated from right to left. Theteeth of the jaw B, engaging with the pipe, F, to be turned, causes ittoslide out wardly upon the smooth face of the immovable jaw G, therebytightly wedging itself between the beveled toothed surface of the blockB and the immovable jaw G. By this means sufficient friction is producedby the pressure to turn thepipe or object desired.

Since the principle of the operation of this device is very easilyunderstood, further description of its operation is not necessary.

It is a convenient device to attach to a screw- Wrench of any pattern.

On account of the peculiar construction of block B and spring 0, theyare no wider than the jaws of. the wrench, hence add nothing tothe,width.

- Having described our invention, what we claim is- In a wrench,'thecombination of the body A, having fixed head G 011 its outer end, withthe screw N, the wedge-shaped block B, serrated on its inclinedfacc andbifurcated at H, and the forked spring 0, attached to said block and tothe movable jaw D, all constructed and arranged as described.

In testimony that we claim the foregoing 'we have hereunto set ourhands,this 19th day of October, 1885, in the presence of witnesses.

WILLIAM ALEXANDER KELLY. CHARLES HENDERSON llUBBELL.

Vitnesses:

H. 0. WAY, JAMES RICHARDS.

